May weather forecast
Iola, WI

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Weather in May

The last month of the spring, May, is a comfortable month in Iola, Wisconsin, with an average temperature fluctuating between 46.6°F (8.1°C) and 64.2°F (17.9°C).

Temperature

As May sets, the average high-temperature shows an increase, moving up from a cool 50.9°F (10.5°C) in April to a refreshing 64.2°F (17.9°C). Iola's temperature lowers to a mean of 46.6°F (8.1°C) during the nights in May.

Humidity

In May, the average relative humidity in Iola is 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 15.8 days and typically aggregates up to 3.19" (81mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Iola. May is the last month it regularly snows. During 0.2 snowfall days, in May, Iola aggregates 0.04" (1mm) of snow. Throughout the year, in Iola, there are 56.3 snowfall days, and 21.38" (543mm) of snow is accumulated.

Daylight

In Iola, the average length of the day in May is 14h and 49min.
On the first day of the month, sunrise is at 5:45 am and sunset at 8:01 pm. On the last day of May, sunrise is at 5:14 am and sunset at 8:33 pm CDT.

Sunshine

In May, the average sunshine in Iola is 8.7h.

UV index

The months with the highest UV index in Iola are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: In May, a regular UV index of 5 translates into these guidelines:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

What is the usual temperature for Iola in May?

In May, in Iola, the average high-temperature is 64.2°F (17.9°C), and the average low-temperature is 46.6°F (8.1°C).

What is the average humidity in May in Iola?

In Iola, Wisconsin, the average relative humidity in May is 78%.

What is the wettest month in Iola?

The month with the most rainfall in Iola is May, when the rain falls for 15.8 days and typically aggregates up to 3.19" (81mm) of precipitation.

How much does it rain in Iola in May?

In May, the rain falls for 15.8 days. Throughout May, 3.19" (81mm) of precipitation is accumulated.

What is the last month it snows in Iola?

May is the last month it regularly snows in Iola, Wisconsin. During 0.2 snowfall days, in May, Iola aggregates 0.04" (1mm) of snow.

How many hours of daylight does Iola have in May?

In May, the average day length in Iola, Wisconsin, is 14h and 49min.

When are sunrise and sunset in May in Iola?

In May, on the first day of the month, sunrise is at 5:45 am and sunset at 8:01 pm. On the last day of the month, in Iola, Wisconsin, sunrise is at 5:14 am and sunset at 8:33 pm CDT.

How many hours of sunshine does Iola have in May?

The average sunshine duration in May in Iola is 8.7h.

When is the highest UV index in Iola?

The months with the highest UV index in Iola are May through August, with an average maximum UV index of 5.

What is the UV index intensity in May in Iola?

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Iola, WI

Average temperature in May - Iola, WI
  • Average high temperature in May: 64.2°F

The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (21.4°F).

  • Average low temperature in May: 46.6°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).

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Average pressure in May
Iola, WI

Average pressure in May - Iola, WI
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Iola, WI

Average wind speed in May - Iola, WI
  • Average wind speed in May: 8.6mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity in May
Iola, WI

Average humidity in May - Iola, WI
  • Average humidity in May: 78%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in May
Iola, WI

Average rainfall in May - Iola, WI
  • Average rainfall in May: 3.19"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is February (0.91").

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Average rainfall days in May
Iola, WI

Average rainfall days in May - Iola, WI
  • Average rainfall days in May: 15.8 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (3.8 days).

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Average snowfall in May
Iola, WI

Average snowfall in May - Iola, WI
  • Average snowfall in May: 0.04"

The month with the highest snowfall is January (5.04").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Iola, WI

Average snowfall days in May - Iola, WI
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Iola, WI

Average daylight in May / Average sunshine in May - Iola, WI
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days in May
Iola, WI

Average sunshine days in May - Iola, WI
  • Average sunshine days in May: 12.9 days

The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is April (12.8 days).

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Average UV index in May
Iola, WI

Average UV index in May - Iola, WI
  • Average UV index in May: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in May
Iola, WI

Average cloud cover in May - Iola, WI
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 33).

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Average visibility in May
Iola, WI

Average visibility in May - Iola, WI
  • Average visibility in May: 6mi

The months with the highest visibility are March, April, May, June, August, October and November (6mi).
The months with the lowest visibility are January, February, July, September and December (5mi).

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Iola, Wisconsin, USA

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